ADC12138CIWMX

Analog To Digital Converters (ADC) Overview

The ADC12138CIWMX is a self-calibrating, 12-bit plus sign successive approximation analog-to-digital converter (ADC) manufactured by Texas Instruments. It features an integrated eight-channel configurable input multiplexer and sample/hold circuit. The device supports serial I/O compatible with MICROWIRE, SPI, and QSPI interfaces. It operates on a single +3.3V or +5V supply, consuming a maximum of 33 mW at 5V. Key electrical specifications include a maximum conversion time of 8.8 μs, a throughput rate of approximately 14 μs per conversion, and an integral linearity error of ±2 LSB after self-calibration.

Analog To Digital Converters (ADC) Feature Summary

• Integrated 8-channel analog multiplexer with programmable acquisition time
• Self-calibrating architecture adjusts linearity, zero, and full-scale errors
• Serial I/O compatible with MICROWIRE, SPI, and QSPI protocols
• Single-supply operation from 3.0V to 5.5V

Analog To Digital Converters (ADC) Applications

• Pen-based computers
• Digitizers
• Global positioning systems

Analog To Digital Converters (ADC) Part Context

The ADC12138CIWMX belongs to the ADC1213x family, which includes the ADC12130 (2-channel) and ADC12132 (4-channel). This specific variant provides an 8-channel multiplexer in a 28-pin Wide Body SOIC package. The 'C' suffix indicates commercial temperature range operation (-40°C to +85°C), while 'IWMX' denotes the specific package and tape-and-reel shipping configuration.

Analog To Digital Converters (ADC) Replacement Considerations

Public documentation identifies the ADC12130CIWMX/NOPB as a direct substitute for the ADC12130CIWMX. However, the ADC12138CIWMX is an obsolete part number within this series. No verified direct replacement part numbers are provided in the source material for the 8-channel variant.